The white spots may be caused by vitiligo, pityriasis alba, florid chaff rash and other diseases, and should be treated with different ointments according to the cause of the disease. 1. Vitiligo: patients can follow the doctor’s instructions glucocorticoid ointment or tacrolimus ointment, can inhibit the activation of lymphocytes, the activity of calcium-modulated phosphatase and the release of skin mast cells, can reduce the destruction of melanin, can effectively prevent the development of vitiligo. 2. white chaff rash: white spots may also be caused by white chaff rash, patients can follow the doctor’s instructions for external use of urea ointment, which has a softening, dissolving the role of keratin. 3. florid furfura: if florid furfura caused by white spots, patients can follow the doctor’s instructions for topical clotrimazole, econazole and other creams, by inhibiting the synthesis of the fungal cell wall, affecting the normal metabolism of the fungus, so as to play an antibacterial, antiseptic effect. There are many reasons for the appearance of white spots, it is recommended to go to a regular hospital, under the guidance of the doctor to use medication, is strictly prohibited unauthorized use of drugs.